While in reality, conservatives value freedom and it’s the liberals that want to put restrictions on everything.
Because Jesus.
This is not reality.
But as to your OP question, I think there are a few answers (which are not mutually exclusive, and can apply to anyone who opposes abortion): some oppose abortion because they actually think the fertilized egg/embryo/fetus is a human life, and that this life’s right to exist trumps the rights of the woman to choose what/who goes or stays inside her body; some oppose abortion because they believe sex should have consequences, especially for women; and some oppose abortion because their religion says it is wrong. There are probably other reasons, but I think these three broadly cover most people’s opposition to abortion.
coughsputterwheeze
No, conservatives value their short list of freedoms. It’s those damned bleeding heart hippie liberal freedoms that they hate so much.
Cynically, I think it’s mostly used as a convenient rallying cry to set “real” Christians apart from the rest, and to spur voting.
Before Der Trihs gets here, I’ll go ahead and say that to some extent, conservatives and evalgelicals (unfortunately, including conservative and evangelical women) simply aren’t comfortable with empowering women.
I’m a pro choice conservative/small “l” libertarian.
Mod, or Rocker?
Not sure what you’re asking there. 
This. Conservative is a word to describe a fairly big tent electorally. Traditional US Conservative being a mixture of economic libertarian and social conservatism. Just as liberals have often described themselves as libertarians. However, liberals are only libertarian on certain issues. On other issues they are as paternalist as a 17th century New England Puritan.
Conservatives want people to behave. Liberals want people to misbehave.
Ask a conservative who is against abortion. Not all conservatives are against abortion.
I would imagine if Bricker were to make an appearance in the column, he would, as a conservative Catholic, tell you that life begins at conception and abortion is the deeply immoral destruction of a human life.
Conservatives think their behavior is the only correct one.
Not all conservatives, and even the blowhards in Congress are often lying to get the votes they need. Looking at Gallup:
For all Americans:
20% are fully opposed to abortion - should be illegal in all circumstances
52% abortion should be legal only in certain circumstances (probably those who are pro choice, but don’t like 3rd trimester abortions)
26% think abortion should be legal in all circumstances.
Now lets look at the stereotype of Liberal vs Conservative:
% who are Pro Life:
Liberal: 23%
Democrat: 31%
Conservative: 66%
Republican: 68%
So the right side of the spectrum leans Pro-Life, but a measurable amount of the left hand side is also Pro Life.
As for reasonings - religion, misogyny, a general degree of discomfort when it comes sexual matters all together probably fit in. It would be interesting to find out why on the Left, vs. the why on the Right IMHO.
Basically, it’s because the Southern Baptist Convention went from being pro-choice to being pro-life (between 1970 and 1980 or so) and the GOP was forced to follow suit.
Except bankers.
Because in most cases it’s unjustified homicide.
Because abortion is murder. Simple as that.
Many people will gladly tell you “what the other side believes” about this issue. I believe those people are just justifying their own belief/feelings/opinion when they do that.
The issue is still contentious but the SCOTUS has reached a compromise. Early term abortion/murder is allowable. Late term abortion/murder is not.
(FYI - You might want to consider that “your reality” might not be the same as “someone else’s reality”.)
Only if, as iiandyiii noted above, you happen to be one of those who “actually think the fertilized egg/embryo/fetus is a human life, and that this life’s right to exist trumps the rights of the woman to choose what/who goes or stays inside her body”.
There are many people who believe that, and it’s their right to believe that, but it’s a belief not shared by most Americans or implemented in the US legal system.
And? The OP question was: “How come conservatives are against abortion?”. It wasn’t “What do most Americans believe about abortion and how is it implemented in the US legal system?”
the question isn’t what they/you believe, it’s why.